How do i change the swappiness values on redhat?

maltiger

The value for swappiness ranges from 0 - 100, setting it to 0 swap will not be used, 100 the server will use as much swap as possible.

You can set the swappiness kernel value dynamically using:

Check the current value.

$ sudo sysctl vm.swappiness
vm.swappiness = 30

Set new value.

$ sudo sysctl vm.swappiness=35

or

$ sudo sysctl -w vm.swappiness=35

For permanent changes edit the /etc/sysctl.conf or a file under the /etc/sysctl.d file and change or add

vm.swappiness = 35

After editing the sysctl file run the following, the default file is /etc/sysctl.conf

$ sysctl -p